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Jinjing
a00365d2ce
Enforce type assertion style by adding a new oxlint scan with `typescript/consistent-type-assertions` rule. Requires using `as const`, type annotations, or `satisfies` instead of raw type casts, with documented `SAFETY:` exceptions for unavoidable cases.
65 lines
2.8 KiB
JavaScript
65 lines
2.8 KiB
JavaScript
import { spawnSync } from 'node:child_process'
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import { mkdtempSync, rmSync, writeFileSync } from 'node:fs'
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import path from 'node:path'
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import { expect, it } from 'vitest'
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import { OXLINT_SCANS, diagnosticTouchesAddedLines } from './check-changed-code-quality.mjs'
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import { resolveOxlintInvocation } from './oxlint-cli-invocation.mjs'
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const root = path.resolve(import.meta.dirname, '..', '..')
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const oxlint = resolveOxlintInvocation(root)
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const rule = 'typescript(consistent-type-assertions)'
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function lint(file, args = []) {
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const result = spawnSync(
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oxlint.command,
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[...oxlint.prefixArgs, ...args, '--format', 'json', file],
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{ cwd: root, encoding: 'utf8', windowsHide: true }
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)
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expect(result.error).toBeUndefined()
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return { status: result.status, diagnostics: JSON.parse(result.stdout).diagnostics }
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}
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it.each(['config', 'mobile'])('enforces new casts without changing full lint in %s', (parent) => {
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const directory = mkdtempSync(path.join(root, parent, 'casting-lint-test-'))
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const file = path.join(directory, 'fixture.test.ts')
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try {
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writeFileSync(
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file,
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[
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"export const oldCast = { current: '⌘N' as string | null }",
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'export const doubleCast = undefined as unknown as string',
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"export const annotated: { current: string | null } = { current: '⌘N' }",
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"export const constant = { current: '⌘N' } as const",
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"export const checked = { current: '⌘N' } satisfies { current: string | null }",
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'// oxlint-disable-next-line typescript/consistent-type-assertions -- SAFETY: Exercise the explicit exception.',
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'export const justified = undefined as unknown'
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].join('\n')
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)
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const full = lint(file)
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expect(full.status).toBe(0)
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expect(full.diagnostics.filter((diagnostic) => diagnostic.code === rule)).toEqual([])
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const scan = OXLINT_SCANS.find((candidate) => candidate.label === 'casting code quality')
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expect(scan).toBeDefined()
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const casting = lint(file, scan.args)
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expect(casting.status).toBe(1)
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expect(casting.diagnostics).toHaveLength(3)
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expect(casting.diagnostics.every((diagnostic) => diagnostic.code === rule)).toBe(true)
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const relative = path.relative(root, file).split(path.sep).join('/')
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const changed = new Map([[relative, [{ start: 2, end: 2 }]]])
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const findings = casting.diagnostics.filter((diagnostic) =>
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diagnosticTouchesAddedLines(diagnostic, changed, root)
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)
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expect(findings).toHaveLength(2)
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expect(findings.every((diagnostic) => diagnostic.severity === 'error')).toBe(true)
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writeFileSync(file, 'export const angle = <string>undefined\n')
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expect(lint(file).status).toBe(1)
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expect(lint(file, scan.args).diagnostics.map((diagnostic) => diagnostic.code)).toEqual([rule])
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} finally {
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rmSync(directory, { recursive: true, force: true })
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}
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})
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